Syllabus by chapter · অধ্যায়ভিত্তিক সিলেবাস

CPU Organization · 87 questions: LEGv8 Architecture; 8086 Physical Address Calculation, CPU Execution Time Calculation, Arithmetic Logic Unit (ALU), 32-bit vs 64-bit CPU; Clock Speed; Intel Core Family; SSD vs HDD, Microprocessor Clock Speed (GHz), Register vs Cache vs Main Memory vs Secondary Memory
Pipelining · 3 questions: Assembly Language Rules & Pipeline Hazards, Control (Branch) Hazard and Mitigation Techniques
Memory Hierarchy & Cache · 37 questions: RAM vs ROM, SRAM vs DRAM, Direct-Mapped Cache Bit Count, Direct-Mapped Cache Address Field Sizes, Cache memory and its effect on performance, Dual-channel RAM; SIMM vs DIMM
Instruction Set & Addressing · 1 questions
I/O & Buses · 10 questions: RAID (Redundant Array of Independent Disks), Serial port vs Parallel port, Computer Screen Resolution
Mixed Topics · 152 questions: RAID Levels, Backup Power / Generator Selection, Invention and Impact of the Transistor, Criteria for Selecting/Buying a Server, Step-Down Transformer / SMPS, Rectification (AC to DC Conversion)

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Start learning: CPU Organization and the Instruction Cycle · CPU সংগঠন এবং ইনস্ট্রাকশন সাইকেল

CPU Organization and the Instruction Cycle

Introduction — what this topic is and why it matters

The CPU (Central Processing Unit) is the "brain" of a computer: the component that actually executes the instructions of a program. CPU organization is the study of the internal building blocks of that brain — the ALU, the control unit, and the registers — and how they are wired together by internal buses. The instruction cycle (also called the fetch–decode–execute cycle) is the never-ending loop the CPU repeats for every single instruction, from the moment you turn the machine on until you shut it down.

This is one of the highest-yield topics in BCS, Bank IT-officer and other government IT examinations. Questions appear in almost every paper — "What does the PC register hold?", "Which register holds the instruction currently being executed?", "What are the steps of the machine cycle?", "What is the function of the MAR/MBR?", "What is a fetch cycle?". If you master the small set of registers and the exact ordering of the micro-steps, you can answer any variation of these questions with confidence.

Read the whole lesson free with an account · পুরো পাঠ পড়তে বিনামূল্যে সাইন আপ করুন

All 8 lessons · সব পাঠ

CPU Organization and the Instruction Cycle · CPU সংগঠন এবং ইনস্ট্রাকশন সাইকেল
Instruction Sets and Addressing Modes · ইনস্ট্রাকশন সেট এবং অ্যাড্রেসিং মোড
Pipelining and Hazards · পাইপলাইনিং এবং হ্যাজার্ড
Cache Memory and Locality of Reference · ক্যাশ মেমরি ও লোকালিটি অব রেফারেন্স
Virtual Memory and Paging · ভার্চুয়াল মেমরি ও পেজিং
I/O Organization and Interrupts · ইনপুট/আউটপুট সংগঠন এবং ইন্টারাপ্ট
Microprocessors: 8085 and 8086 Architecture and Programming · মাইক্রোপ্রসেসর: ৮০৮৫ ও ৮০৮৬ আর্কিটেকচার ও প্রোগ্রামিং
Memory Devices, Storage Systems and RAID · মেমরি ডিভাইস, স্টোরেজ সিস্টেম ও RAID

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